2720042811 has 6 divisors (see below), whose sum is σ = 3928950740. Its totient is φ = 1813361868.

The previous prime is 2720042803. The next prime is 2720042821. The reversal of 2720042811 is 1182400272.

2720042811 is a `hidden beast` number, since 27 + 200 + 428 + 11 = 666.

It is not a de Polignac number, because 2720042811 - 2³ = 2720042803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2720042821) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 151113481 + ... + 151113498.

Almost surely, 2^2720042811 is an apocalyptic number.

2720042811 is a deficient number, since it is larger than the sum of its proper divisors (1208907929).

2720042811 is a wasteful number, since it uses less digits than its factorization.

2720042811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302226985 (or 302226982 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 2720042811 is about 52154.0296717329. The cubic root of 2720042811 is about 1395.9137328911.

The spelling of 2720042811 in words is "two billion, seven hundred twenty million, forty-two thousand, eight hundred eleven".